Kiln car



- sep1.-6-,1927.

, P. A. MEEHAN KILN CAR Filed April 22'. 192sA INVENTOR PAW AMM/MN BY W2 Patented Sept. 6i, 1927. y y s UNITEDSTATES APAUL OFFICE- f A. vMEEHAN, or oLEvEEA-ND, orrIo, AssIGNoR y'ro iiivIEEIoiiNf DEEssLER TUNNEL 1 lxiENs, INCL, oE'foLEvELAND, omo, yA' ooRroEA'rIoN or NEW YORK.v

1. f KIEN ymin.

`The genera-l l object of presentl invention is toimprove the construction of kiln cars such as areA employed in moving ma-A terial to be.. *subjectedL .tol heat 'treatment specificobjectis to provide a cary Construc-l tion especially. adapted for cars larg'gerlthany ordinary kilncars and capableof carrying. very yheavy loadsjunder the; thermal'.,condiv tionsl `experienced invannealing. metalplates and 'the like; Further objects v,of the presy ent invention are toprovide a car construction With improved .circi'ilation facilitiesbeneatli the .tray and which Will permit expansion and :contractionfof the tray orpot bottom independently of the car.

These Aand rother features of noveltyivhioh characterize invention are pointed outv with particularityin "the claims annexed to i: and forming .a partof.thisspecificationy For a vbetter understanding of; the' invention, its advantages andthe spefcificfobjects at` tained With it, reference should. bel had to the accompanying .drawingsl andr descriptive matterl in which l' have *illustrateda pre-1l f erred `einbodiinent. of myf invention; e e i vInthe drawings: Q ,.F ig. l is an endlview: o

`Fig'. 2 is aiplanview ofone the metallicfifi@ annelies-kille covers, for the refractory body of the cara;

' Fig. 3 isja section' on` they line offfof v Fig. l and Fig. 3'; p Fig. 4 isa section on theline of ione of the rollers in tory parts forming the refractorv body por-v tion of a kilnfcar, which may comprise the usual metallic body or frame (not shown) mounted on the usual track engaging Wheels.

Mounted on top of the refractory body of' eachl car are4 one or more cast metal truck covers B. In the construction illustrated each covers substantially onehalf of the 4 througha continuousftunnel lkiln. A.more.,

In the drawings, A represents the 'refrac-` nppiicatioii `fueaiiprii 22, 1926. seriaiNq. 163,888. Y,

fractory car body. The longitudinal axesl of thecoverj plates are parallel to the longitudinal axisof the 'carandto each other.

l Each Acover plate isiprovided with longitudinallyvand transversely extending ribs B8. alongtheloiver surface to hold theplates in position on the Irefractory blocks lAA. Along the lupplerf surfaceV ofy the plates area lon- Vgitudinally spaced series of transversely eE- tending Vribs' B', B2, B3, B4, andJB5.- Cer-.

tain ribs, preferably the ribs BQBZ, B, and 4'B51 near the front and rear edges, 'are provide'dgpwitii .a series oftransversely eX- tending grooves B6 to contain rollingmemf bers Dy 'preferablyin theform of cast iron orsteel cylinders.` The-fgr'rooves B6 4are s o` desigr'ied` that sm'allmovements `ofthe rollers,

D may .taire placerin thel'grooves. 'The rollers .D of each Icoverplate `support-a cor. Y

responding tray or pot Cin which vthe articles vtojbef treated are placed fand enclosed; l

by ajcorrespondingcover F. Onefof the ribs, offeach cover plate is -construclajlid2 Without grooves and fof' a height slightly greater than `theheight of the "rollersfD, when ,thel latter arein position in the groves.l

desired movement o fthe'tray relative to the caryvvill be 'suificientl to Vprevent any `diss placement "of the ytrav when the-car isvstartedor's'topped'.l Thetray. or pot f.C is-`provided alongit's loiver 4surface",'withv longitudinallyextending ribs .CQspfaced transversely andk adapted to vrest onthe roll'eri'meinbe'rsDand Afriction rib B3. There are many possible modifica tions of this construction, such as using small castings E .to cover the rollers D and resting the tray ribsl C on the covering castings E as shown in Figs. 7 and 8, thus ob taining abetter distribution of Weigth on the rollers D and avoiding any possible deformation and Wear due to direct contact between theV tray ribs and the rollers.

' With theV aboveconstruction, it is obvious thatt-here is a good circulation of the kiln atmosphere between theV transverse ribs'of the cover plates and the bottom of the tray.V

This good circulation beneaththe trayis one of the'advantages of my invention andA con-V tributes to eiiicient and uniform heating.y

With the metal cover plates and traylcon# lstructedfas described, Vcontraction and eX pansionof the tray is permitted Without any l Theapur'pose'of thisrib Bis to provide a friction surface vwhich, While permitting any` danger of distorting or destroyingy either the cover plates or refractory bodies. The importance of this may be judged by the fact `that in practice heavy loads are put on thc cars while cover plate members, rollers and the tray may be subjected to temperatures as high as 17000 F. for hours at a time.

While in accordance with the provisions ot' the statutes, I have illustrated and described the best 'forms ot my invention nonr known to me, it will be apparent to those skilled in the art that many changes in term may be made Without departing from the spirit ot my invention and that certain fea.- tnres ot' my invention may sometimes be employed to advantage without a corresponding use of other teatnres.

Having now described my invention, what I claim as nev and desire to secure by Letters Patent, is:

l. In a kiln car, the combination with the car body, of a metal cover plate n'iember for said body, a metallic Work sajjiportingr platform membe' and means including rolling bodies between saidmembers and a projection on one of said members in frictional engagement with the other through Which said platform member supported by said cover plate member With limited freedom for relative movement to accommodate relative thermal expansion and contraction.

2. In a kiln car, the combinaiton With the ear body, of a cover plate member :tor said body, a metallic Work supporting platform member, means including` )rejections on one of said members, some el said projections carrying? non-friction members and one ot the projections serving as a friction member through which said Work snpportiimplat- Jform member is supported by said cover plate with limited freedom to accommodate relative thermal expansion and contraction.

3. In kiln ear, the combination with a ear body, of a metallic cover plate member for sait body, a metallic work supporting,r

platform member, means including a series of projections on one of said members, the central )rejection servingr as a friction member an projections carrying non-friction members, through which said platform member is supported by said cover plate member.

l. In a kiln car, the conibination with a car body, ot' a metallic cover plate member for said body, a metallicworlr supporting platform member, means including transverse ribs on said cover plate member, roller members in grooves in some of said ribs, another of said transverse ribs being ot slightly greater height than the roller members when in position, for supporting said platform member on said cover plate member, the last mentioned rib serving as afriction member and the spaces between said ribs serving `as circulating oassages between said platform and cover plate members.

5i. In a lriln car, the combination with a ear body, of a cover plate member for said body, a work sapportmg` platform member, means on said cover plate member including): ribs provided with seats for non-friction roller members and a rib sewingr as a iriction member, and roller members in said seats which in conjunction with said friction member support said platform member With limited freedom for relative movement. j

G. In a kiln car, the combination with a car body, ot' a cover plate member, a Work supporting platform member, means including a longitudinal series of transverse proj ections on one of said members for snpporting the said platform member on the cover plate meniber with the spaces between `the transverse projections serving as circulating pas ages between said members.

Signed at Cleveland, in the county of Cuyahoga, and State of Ohio, this 19th day ot April, A. D. 1926.

PAUL A. MEEHAN.

Cil 

